Drill bit DeWalt DT8966-QZ, length 210 mm, pack of 10

DeWalt DT8966-QZ drill bit, length 210 mm, pack of 10 — a set of long-reach masonry bits designed for drilling plug and anchor holes in solid substrates. Each bit features a solid carbide cutting tip with four cutting faces and a four-flute helix to improve debris evacuation and reduce clogging during extended-depth drilling. The bits are intended for use with compatible drill chucks and holders in construction, installation and renovation tasks where repeated, reliable hole-making is required.

Advantages

The four-flute helix design maximises removal of dust and debris, enabling faster drilling and cleaner holes in masonry and concrete. A solid carbide tip with four cutting faces gives improved cutting performance and resistance to jamming when encountering rebar, while the brazed carbide-to-body joint provides enhanced durability under repeated use. Supplied as a pack of 10, the set supports repetitive professional work and reduces downtime for bit changes.

Suitable for

• Drilling plug and anchor holes in masonry, brick and concrete
• Installation work requiring extended-depth holes
• Renovation and construction tasks with frequent repetitive drilling
• Situations where improved debris removal and reduced rebar jamming are required

Key specifications

• Overall length: 210 mm
• Tip material: solid carbide with four cutting faces
• Flute geometry: 4-flute helix for effective debris evacuation
• Quantity: pack of 10 drill bits
• Application: masonry, stone and concrete

How to use

Secure the drill bit in a compatible drill chuck or holder and set the drill to the recommended rotary mode for masonry. Start drilling at low speed to establish the centre, then increase to the appropriate speed for the substrate while applying steady forward pressure. Retract periodically on extended-depth holes to clear debris and prevent overheating. When hitting rebar, reduce feed pressure and withdraw slightly to allow the carbide faces to cut through without excessive binding.

Usage recommendations

Use the bits with an appropriate hammer or rotary drill rated for masonry work, wear eye and hearing protection, and clear dust with periodic withdrawals during deep drilling. Store the bits dry and inspect carbide tips before use to ensure optimal performance and safety.